EP2867399A2 - Dry cleaning machine with a refrigeration system adopted for multiple solvents - Google Patents
Dry cleaning machine with a refrigeration system adopted for multiple solventsInfo
- Publication number
- EP2867399A2 EP2867399A2 EP13802749.5A EP13802749A EP2867399A2 EP 2867399 A2 EP2867399 A2 EP 2867399A2 EP 13802749 A EP13802749 A EP 13802749A EP 2867399 A2 EP2867399 A2 EP 2867399A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- solvent
- tank
- heat exchange
- dry cleaning
- cleaning machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
- D06F43/02—Dry-cleaning apparatus or methods using volatile solvents having one rotary cleaning receptacle only
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
- D06F43/08—Associated apparatus for handling and recovering the solvents
- D06F43/086—Recovering the solvent from the drying air current
- D06F43/088—Condensing arrangements
Definitions
- the present invention relates generally to a dry cleaning machine utilizing a refrigeration system for the dry cycle of the dry cleaning machine.
- the first dry cleaning machines were no more than washer extractors that used a dry cleaning solvent in place of water and a separate steam heated and water cooled dryer. These machines did not recover the evaporated solvent during the dry cycle and just release it to the atmosphere, which had significant environmental consequences.
- Another conventional dry cleaning machine uses an air cooled, heat pump drying system with a higher efficiency but has its drawbacks.
- the machine tends to be overheated because the air cooling cannot cooled with high ambient temperatures in the dry cleaning plants and the heat pumps tend to take a long time to build up to running temperature making the drying cycle longer.
- a dry cleaning machine with washing and drying cycles has a rotary drum holding clothing or likes, a first solvent tank for storing a first solvent, a second solvent tank storing a second solvent, a first water separator operationally connected to the first solvent tank, a second water separator operationally connected to the second solvent tank, and a solvent recovery system operationally connected to the first and second water separators and the rotary drum.
- the solvent recovery system includes a refrigeration system containing a first heat exchange system, a second heat exchange system, a refrigeration tank storing a refrigerant, and a fan for cooling the refrigerant.
- the washing cycle uses one solvent from either the first or second solvent tank at a time and the drying cycle uses heated air to evaporate the solvent used in the washing cycle.
- the dry cleaning machine is configured so that the first and second solvents can be independently used within the same machine for different washing cycles without need of manual exchange of the solvents or system purge.
- the first heat exchange system heats air to be used for the drying cycle
- the second heat exchange system cools and condenses the solvent evaporated by the heated air.
- the condensed solvent passes through the first water separator where water is separated and is then collected in the first solvent tank if the condensed solvent is the first solvent.
- the condensed solvent goes through the second water separator and is collected in the second solvent tank if the condensed solvent is the second solvent.
- a dry cleaning machine having a washing cycle and drying cycle includes a rotary drum, a first solvent tank for storing a first solvent, a first water separator operationally connected to the first solvent tank, a second solvent tank for storing a second solvent, a second water separator operationally connected to the second solvent tank, a first solvent recovery system operationally connected to the first water separator and the rotary drum, a second solvent recovery system operationally connected to the second water separator and the rotary drum, and a refrigeration system wherein the refrigeration system comprises a first heat exchange system, a second heat exchange system, a third heat exchange system, a fourth exchange system, a refrigerant tank for storing a refrigerant, and a fan for cooling the refrigerant.
- the washing cycle uses either the first solvent or the second solvent at a time and the drying cycle uses heated air to evaporate the first or second solvent used in the washing cycle.
- the first heat exchange system heats air to be used for the drying cycle when the first solvent is used in the washing cycle
- the second heat exchange system cools and condenses the first solvent evaporated by the air heated by the first heat exchange system
- the third heat exchange system heats air to be used for the dry cycle when the second solvent is used for the washing cycle
- the fourth heat exchange system cools and condenses the second solvent evaporated by the air heated by the third heat exchange system.
- the first or second solvent passes through respectively the first or second water separator and is collected in respectively the first or second solvent tank.
- the dry cleaning machine is capable operating with the first solvent and the second solvent independently and separately so that potential contamination of one solvent with the other is minimized.
- a dry cleaning machine having a washing cycle and drying cycle includes a rotary drum, a first solvent tank for storing a first solvent, a first water separator operationally connected to the first solvent tank, a second solvent tank for storing a second solvent, a second water separator operationally connected to the second solvent tank, a third solvent tank for storing a third solvent, a third water separator operationally connected to the third solvent tank, a first solvent recovery system operationally connected to the first and second water separators and the rotary drum, a second solvent recovery system operationally connected to the third water separator and the rotary drum and a refrigeration system wherein the refrigeration system comprises a first heat exchange system, a second heat exchange system, a third heat exchange system, a fourth exchange system, a refrigerant tank for storing a refrigerant, and a fan for cooling the refrigerant.
- the washing cycle may use one of the first, second and third solvents at a time
- the drying cycle may use heated air to
- the first heat exchange system heats air to be used for the drying cycle when the first or second solvent is used in the washing cycle
- the second heat exchange system cools and condenses the solvent evaporated by the air heated by the first heat exchange system
- the third heat exchange system heats air to be used for the dry cycle when the third solvent is used in the washing cycle
- the fourth heat exchange system cools and condenses the third solvent evaporated by the air heated by the third heat exchange system.
- the condensed first, second or third solvent passes through respectively the first, second or third water separator and is collected in respectively the first, second or third solvent tank, creating independent and separate solvent circulations with the machine.
- the dry cleaning machine can have a heat booster which can used to heat the air to be used for the drying cycle.
- the heat energy for the heat booster can be supplied by using steam received from an external boiler.
- other embodiment according to the present invention can have a separate internal heater to supply the heat to the heat booster.
- the internal heater could be an electrical heater or a small boiler.
- the dry cleaning machine has a refrigerant cooling system, which cools the refrigerant tank when the tank reaches at a preset temperature in order to prevent the machine from shutting down.
- the refrigerant cooling system can be configured to be turned off when the tank reaches at another preset temperature.
- the temperature of the refrigerant tank means a temperature measured at the tank or a temperature of the refrigerant exited from the tank.
- the preset temperature may be about 70-100 °F, preferably 80-90 °F.
- the refrigerant cooling system may include a coolant tank storing a coolant, which is used to cool the refrigerant tank.
- the coolant may be cooled by the refrigeration system when the fan provides sufficient cooling for the refrigerant.
- FIG.l is a schematic diagram illustrating a dry cleaning machine according to a preferred embodiment of the present invention where two solvent tanks and one solvent recovery system are used.
- FIG. 2 is a schematic diagram illustrating a dry cleaning machine according to another preferred embodiment of the present invention where two solvent tanks and two solvent recovery systems are used.
- FIG. 3 is a schematic diagram illustrating a dry cleaning machine according to another preferred embodiment of the present invention where three solvent tanks and two solvent recovery systems are used.
- FIG. 4 is a schematic diagram illustrating a refrigeration system according to a preferred embodiment of the present invention.
- FIG. 5 is a schematic diagram illustrating a refrigeration system according to another preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION
- FIG. 1 a dry cleaning machine according to a preferred embodiment of the present invention is illustrated.
- the dry cleaning machine includes a solvent recovery system 100, a rotary drum 300 that hold garments to be dry cleaned, two solvent tanks 601, 602 separately holding two different solvents, two water separators 401, 402, two separate pumps 701, 702, at least two filter system 201, 202, a button trap 500.
- a solvent is supplied to the drum from either the solvent tank 601 or 602 depending on the user's choice or setting.
- the pump 701 transfers the solvent from the solvent tank through the filter section 201 where the solvent is filtered out impurities including color dyes.
- the drum 300 is operationally connected to the solvent recovery system 100 so that air heated in the solvent recovery system can circulate into the drum and the solvent evaporated from the drum by the heated air can circulate into the solvent recovery system where the solvent can be condensed and recovered.
- the drum 300 optionally has a button trap 500, which trap heavy impurities such as buttons during the washing cycle.
- the solvent recovery system is operationally and separately connected to two water separators, 401, 402 which are operationally connected to two solvent tanks 601, 602 respectively.
- the solvent recovery system has a refrigeration system having two separate heat exchange systems- one for heating air for the drying cycle and the other for cooling and condensing the solvent evaporated during the drying cycle allowing recovery of the solvent.
- the refrigeration system is not illustrated in FIG.1.
- this system is more suitable where a small amount of the solvents can be mixed without affecting operation of the dry cleaning machine or maintenance.
- solvents with chemically the same solvent in different concentrations could be used.
- two chemically different kinds of solvent may be also used because they may be chemically comparable or the amount of the first solvent that may contaminate the second solvent being used in a subsequent dry cleaning operation may not affect the dry cleaning operation or use of the solvent for another dry cleaning operation.
- a dry cleaning machine illustrated in FIG. 2 may be more suitable for such a situation.
- the dry cleaning machine in FIG. 2 is similar in that there are two separate sets of a solvent tank, a water separator, a pump and a filter system. But this dry cleaning machine has two separate solvent recovery systems, 101, 102 which are respectively connected to the two separate sets of a solvent tank (601, 602), a water separator (401, 402), a pump (701, 702) and a filter system (201, 202).
- the two solvent recovery systems may have two separate refrigeration systems but may share a single refrigeration system with extra heat exchange systems.
- the refrigeration system can have a refrigeration tank, a fan but two separate sets of the heat exchange systems for two different solvents.
- the refrigeration system can have only single set of the heat exchange system but the two solvent recovery systems may have two separate chambers separately positioned near the same set of the heat exchange systems so that the heating of air or condensing of the solvent caused by the same set of the heat exchange system.
- the solvent recovery systems have coil shape chambers, which round around the same heat exchange system alternatively.
- multiple heat exchange systems include physically a single heat exchange system or a less number of the heat exchange systems, providing the purported function the same multiple times as the number of the multiple heat exchange systems.
- a dry cleaning machine has three solvent tanks 603, 604, 605 but two solvent recovery systems 103, 104.
- one solvent recovery system 104 is dedicated to a particular solvent tank 605 and the other solvent recovery system 103 is operationally connected to the other two solvent tanks 603, 604.
- the dry cleaning machine may have three filer systems 203, 204, 205, which are respectively connected to the three solvent tanks.
- the three solvent tank systems may have two separate refrigeration systems but may share a single refrigeration system with extra heat exchange systems as described with respect to FIG. 2.
- a refrigerant tank 1 stores a refrigerant, which is cooled by a fan 9, which circulates air over an air condenser 6.
- a refrigerator compressor 5 compresses the refrigerant where the temperature of the refrigerant rises.
- the heated and pressurized refrigerant is supplied to a heat exchange system 4 to heat air to be used the drying cycle.
- the refrigerant evaporates providing a lower temperature environment.
- the solvent evaporated during the dry cycle is subjected to the heat exchange system 3 and condensed.
- An evaporator 2, where the refrigerant also evaporates, may be used to lower the temperature of the solvent stored in the solvent tanks or the solvent to be used in the washing cycle.
- the fan 9 alone may not be able to cool the refrigerant fast enough, causing the temperature of the refrigerant tank arises. When the temperature reaches at a critical temperature, the entire refrigeration system may shot down. In order to prevent the refrigerant tank temperature from rising over a critical temperature, a refrigerant cooler system may be provided around the refrigerant tank 1.
- a refrigerant cooler system may use a coolant or the dry cleaning solvent to cool the tank.
- the coolant may be stored in a separate coolant tank 38, 38a.
- the coolant in FIG. 5 may be cooled by an evaporator 2a.
- Water can be used as a coolant, which may be provided from an external water supply without a separate water tank.
- the refrigerant cooling system may be configured to be turned on when a temperature reaches at a predetermined temperature.
- the predetermined temperature may be about between 70-100 °F, preferably 80-90 °F.
- the heated air for the drying cycle can be further heated with an assistance of a heat booster 7.
- the heat energy required by the heat booster in heating the air may be supplied by an external source via steam as shown in FIG 5.
- the dry cleaning machines illustrated in FIG. 4 contains an internal heating source 10 for the heat booster such as an electrical heater.
- the heater can directly heat the heat booster or supply hot steam to the heat booster.
- solvent used herein means a single solvent or a mixture of two or more solvents.
- solvents describes where the solvents are different in their concentrations, chemical compositions or both.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261664750P | 2012-06-27 | 2012-06-27 | |
PCT/US2013/048161 WO2014004816A2 (en) | 2012-06-27 | 2013-06-27 | Dry cleaning machine with a refrigeration system adopted for multiple solvents |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2867399A2 true EP2867399A2 (en) | 2015-05-06 |
Family
ID=49753449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13802749.5A Withdrawn EP2867399A2 (en) | 2012-06-27 | 2013-06-27 | Dry cleaning machine with a refrigeration system adopted for multiple solvents |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2867399A2 (en) |
JP (1) | JP2015525618A (en) |
KR (1) | KR20150032700A (en) |
CN (1) | CN104487626A (en) |
WO (1) | WO2014004816A2 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3234105A1 (en) * | 1982-09-14 | 1984-03-22 | Multimatic Maschinen GmbH & Co, 4520 Melle | METHOD AND DEVICE FOR REDUCING THE SOLVENT CONCENTRATION IN WASH DRUM HOUSINGS OF DRY CLEANING DEVICES AFTER THE WASHING PROCESS IS COMPLETED |
JPS62179497A (en) * | 1986-01-31 | 1987-08-06 | 富士車輌株式会社 | Solvent recovery method in dry cleaning |
JPH0667433B2 (en) * | 1986-07-17 | 1994-08-31 | 三菱重工業株式会社 | Control device for dry cleaning device |
US5467539A (en) * | 1994-04-19 | 1995-11-21 | Multimatic Corporation | Reducing the concentration of solvent vapors in drycleaning machines |
US6691536B2 (en) * | 2000-06-05 | 2004-02-17 | The Procter & Gamble Company | Washing apparatus |
JP4169529B2 (en) * | 2002-04-23 | 2008-10-22 | 三洋電機株式会社 | Dry cleaning device |
US7926311B2 (en) * | 2003-10-01 | 2011-04-19 | General Electric Company | Integral laundry cleaning and drying system and method |
EP2649387B1 (en) * | 2010-12-08 | 2018-08-15 | Carrier Corporation | Refrigeration circuit |
CN202298240U (en) * | 2011-08-22 | 2012-07-04 | 深圳中施机械设备有限公司 | Water-free energy saving type petroleum solvent dry cleaning machine |
-
2013
- 2013-06-27 WO PCT/US2013/048161 patent/WO2014004816A2/en active Application Filing
- 2013-06-27 CN CN201380034910.5A patent/CN104487626A/en active Pending
- 2013-06-27 KR KR20157000781A patent/KR20150032700A/en not_active Application Discontinuation
- 2013-06-27 EP EP13802749.5A patent/EP2867399A2/en not_active Withdrawn
- 2013-06-27 JP JP2015520498A patent/JP2015525618A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2014004816A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014004816A2 (en) | 2014-01-03 |
JP2015525618A (en) | 2015-09-07 |
CN104487626A (en) | 2015-04-01 |
KR20150032700A (en) | 2015-03-27 |
WO2014004816A3 (en) | 2014-05-01 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20141219 |
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DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20151218 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20170103 |